Slide valve



'C. BIENZ.

SLIDE VALVE.

APPLICATION man SEPT-27,1921.

' Patented Mar. 28, 1922.

\NVENTOR,

PATENT OFFICE CHARLES mm, or sr. JEAN, GENEVA, SWITZERLAND.

SLIDE VALVE.

Specification of Letters Patent. Patented B131. 28, 1922- Application filed September 27, 1921.- Serial 1T0. 503,670.

To all whom it wmg concern:

Be it known that I, CHAnLE-s BIENZ, a citizen of the Republic of Switzerland, residing at St. Jean, Geneva, in the Republic of Switzerland, have invented certain new and useful Improvements in Slide Valves, of which the following is a specification.

The present invention relates to slide valves for gas engines, such as internal combustion engines, explosion motors and steam engines.

In order to more clearly understand the invention reference is made to the accompanying drawings which show by way of example two embodiments of the object of the present invention.

Fig. 1 is a longitudinal section of afirst embodiment.

Fig. 2 is alongitudinal section of a second embodiment. V

According to the first embodiment, the valve consists of a slide (4, adapted to travel over the outer wall 6 of the cylinder 0, in which the piston (Z moves. This slide valve (4 is adapted to close the port e, is provided with an inclined face f and is housedin a casing, one face of which has a corresponding slope and is arranged in a sleeve passing through two guides h and 6 attached to the walls of the cylinder 0. I

This sleeve g is traversed longitudinally from end to end by a stem 7' connected to one end of the connecting rod is worked by the motor. A spiral spring Z surrounds the second extremity of the stem j, abutting on one side against a double nut m screwed on the stem 7' and on the other side against the bottom of the housing provided in the sleeve 9. The cap nut n is screwed on the sleeve 9 and bears against a shoulder 0 provided onthe stem j.

Assuming that the members of this valve occupy the position shown in the drawing, and that at the moment the connecting rod is moved in the direction of the arrow p, the stem j is drawn by this movement and thespring Z is compressed; thus reacting on the sleeve 9.. the inclined face of which bears against the inclined face f and consequently the slide valve is pressed against the outer wall 7) of the cylinder thereby progressively closing the port 6. This closing in which moves the piston d.

' passing through two guides 11/ '0 abuts against the cap nut n, that is to say when the connecting rod/c has accomplished half a revolution.

If at that moment'the movement of the connecting rod is always takes place in the direction indicated by the arrow 19, the shoulder .0 making contact with the cap nut it pushes the sleeve 9, the result being to cause the slide a to travel along the outer wall 6. When this movement takes place, the spring Z not being in tension, there is no pressingof the slide a against the wall I). After having reached the end of its stroke, the slide a moves in the opposite direction over the wall 6, so as to take up the position shown in the drawings.

The cycle of movements is repeated as above described.

According to the second embodiment the valve consists of a slide a adapted to travel over the outer wall I) of the cylinder 0', This slide a intended to close the port 6 is provided with an inclined face f and housed in a casing, one face of which has a corresponding slope and is arranged in a, sleeve 9' and i, fixed to the walls of the cylinder 0. Into this sleeve 9 passes a stem 7" attached at one end to the slide a. A spiral spring p surrounds the other end of this stem 7" and bears on the one side against a double nut m screwed on the stem j, and on the other hand against the bottom of the housing provided on the sleeve 9, the result being to keep the slide a in position against the wall 6'.

An adjusting nut n screwed into the sleeve 9 connects the latter to a connecting rod is actuated by the motor.

Assuming the members of this valve to occupy the position shown in the drawings, and that at the moment the connecting rod 70 is moved in the direction of the arrow p, the sleeve, 9 is drawn by this movement and the slide a is moved-whereupon the port 0' is alternately closed and opened.

What I claim and desire to secure by Letters Patent is In combination in an engine, a cylinder,

a port in said cylinder, a reciprocating valve holding the slide adjacent to said port durthereioi adapted to cover and uncover said ing additional movement of said actuating port, comprising a triangular slide and means whereby said slide is pressed against means 'toactuate said slide including a said port. 7 1 I Y i Wedge shaped. member to engage said slide, In testimony whereof I affix my signature. said cylinder being provided withsmeans for 7 CHARLES BIENZ. 

